Download instructions to tenderers

Power Electronics
Code
DL 2642
Specifications
Quantity
ISOLATION AMPLIFIER - didactic equipment
This module must be used in conjunction with an oscilloscope or with a computer interface for potential-free,
safe measurement recording in particular in static converter systems and variable frequency drives.
Technical features:
Isolation amplifier, channels A, B, C, E:
•Frequency range: dc to 80 kHz.
•Input voltage (between 0 and U)
Max 620 Vdc/460 Vac
Input resistance Ri = 1 MΩ in all ranges
Three-stage attenuator:
MT = 1:1; 1:10; 1:100
Accuracy: ±2% of full scale range
•Input current (between 0 and I)
Max: 10 A continuous; 16 A for t< 15 min; 20 A for t<2 min.
Internal resistance: 30 mΩ in all ranges
Two-stage attenuator:
MT = 1 V/A; 1/3 V/A
Accuracy: ±5% of full scale range
•Five outputs: A, B, C, D, E with led for overrange indication
Output resistance RO: 100 Ω
Multiplexer:
•Mux channels, selectable: 1 to 8 (4 x signal; 4 x zero line)
•Gain attenuator, adjustable: 0.2 to 1
•Y-position, adjustable: -8 V to + 8 V
•Trigger source, switchable to A, B, C, D, E
•Mux frequency, adjustable: 50 kHz to 500 kHz (typical)
•Two BNC outputs for oscilloscope
Mathematical module and filter:
•Functional modes for channel D: Addition A+B; subtraction A-B; multiplication AxB/10 or AxB; reconstruction
Page 1 of 2
Code
Specifications
Quantity
of the phase voltage LIN(A, B, C) from the line-to line voltages; channel E switched into channel D for
multiplexing.
•Filter: Low pass active filter of the 2° order required for the recovery of the fundamental wave out of the
PWM signals.
Cut-off frequency: 1 kHz.
Space vector indicator:
•Voltage vector: indication with 7 leds
•Magnetic flux vector: BNC outputs X e Y for oscilloscope
Power supply:
•Single-phase from mains Frequency: 50/60 Hz
This module must have insulated type front panel with the electrical scheme and it must include also safety
terminals. Nine potentiometers, eight selectors and five switches shall be included in this panel.
Page 2 of 2